Partial support for mixed case in PL/pgSQL.

Left are identifiers that contain non-alnum/_ chars.
So e.g. whitespaces in identifiers are still not
supported.

Jan

Author: Jan Wieck

src/pl/plpgsql/src/gram.y

@@ -4,7 +4,7 @@
  *			  procedural language
  *
  * IDENTIFICATION
- *    $Header: /cvsroot/pgsql/src/pl/plpgsql/src/gram.y,v 1.1 1998/08/24 19:14:47 momjian Exp $
+ *    $Header: /cvsroot/pgsql/src/pl/plpgsql/src/gram.y,v 1.2 1999/01/28 11:48:30 wieck Exp $
  *
  *    This software is copyrighted by Jan Wieck - Hamburg.
  *
@@ -344,7 +344,7 @@ decl_aliasitem	: T_WORD
 			char	*name;
 
 			plpgsql_ns_setlocal(false);
-			name = plpgsql_tolower(pstrdup(yytext));
+			name = plpgsql_tolower(yytext);
 			if (name[0] != '$') {
 			    elog(ERROR, "can only alias positional parameters");
 			}
@@ -374,7 +374,7 @@ decl_varname	: T_WORD
 
 decl_renname	: T_WORD
 		    {
-		        $$ = plpgsql_tolower(pstrdup(yytext));
+		        $$ = plpgsql_tolower(yytext);
 		    }
 		;
 

src/pl/plpgsql/src/pl_comp.c

@@ -3,7 +3,7 @@
  *			  procedural language
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/pl/plpgsql/src/pl_comp.c,v 1.4 1998/11/27 20:07:22 vadim Exp $
+ *	  $Header: /cvsroot/pgsql/src/pl/plpgsql/src/pl_comp.c,v 1.5 1999/01/28 11:48:31 wieck Exp $
  *
  *	  This software is copyrighted by Jan Wieck - Hamburg.
  *
@@ -537,7 +537,7 @@ plpgsql_parse_word(char *word)
 	 * We do our lookups case insensitive
 	 * ----------
 	 */
-	cp = plpgsql_tolower(pstrdup(word));
+	cp = plpgsql_tolower(word);
 
 	/* ----------
 	 * Special handling when compiling triggers
@@ -657,7 +657,7 @@ plpgsql_parse_dblword(char *string)
 	 * Convert to lower case and separate the words
 	 * ----------
 	 */
-	word1 = plpgsql_tolower(pstrdup(string));
+	word1 = plpgsql_tolower(string);
 	word2 = strchr(word1, '.');
 	*word2++ = '\0';
 
@@ -783,7 +783,7 @@ plpgsql_parse_tripword(char *string)
 	 * Convert to lower case and separate the words
 	 * ----------
 	 */
-	word1 = plpgsql_tolower(pstrdup(string));
+	word1 = plpgsql_tolower(string);
 	word2 = strchr(word1, '.');
 	*word2++ = '\0';
 	word3 = strchr(word2, '.');
@@ -893,7 +893,7 @@ plpgsql_parse_wordtype(char *word)
 	 * We do our lookups case insensitive
 	 * ----------
 	 */
-	cp = plpgsql_tolower(pstrdup(word));
+	cp = plpgsql_tolower(word);
 	*(strchr(cp, '%')) = '\0';
 
 	/* ----------
@@ -988,7 +988,7 @@ plpgsql_parse_dblwordtype(char *string)
 	 * Convert to lower case and separate the words
 	 * ----------
 	 */
-	word1 = plpgsql_tolower(pstrdup(string));
+	word1 = plpgsql_tolower(string);
 	word2 = strchr(word1, '.');
 	*word2++ = '\0';
 	*(strchr(word2, '%')) = '\0';
@@ -1123,7 +1123,7 @@ plpgsql_parse_wordrowtype(char *string)
 	 * Get the word in lower case and fetch the pg_class tuple.
 	 * ----------
 	 */
-	word1 = plpgsql_tolower(pstrdup(string));
+	word1 = plpgsql_tolower(string);
 	cp = strchr(word1, '%');
 	*cp = '\0';
 

src/pl/plpgsql/src/pl_funcs.c

@@ -3,7 +3,7 @@
  *			  procedural language
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/pl/plpgsql/src/pl_funcs.c,v 1.2 1998/09/01 04:40:24 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/pl/plpgsql/src/pl_funcs.c,v 1.3 1999/01/28 11:48:31 wieck Exp $
  *
  *	  This software is copyrighted by Jan Wieck - Hamburg.
  *
@@ -189,6 +189,7 @@ plpgsql_ns_additem(int itemtype, int itemno, char *name)
 
 	if (name == NULL)
 		name = "";
+	name = plpgsql_tolower(name);
 
 	if (ns->items_used == ns->items_alloc)
 	{
@@ -320,22 +321,48 @@ plpgsql_ns_rename(char *oldname, char *newname)
 
 
 /* ----------
- * plpgsql_tolower			Translate a string in place to
- *					lower case
+ * plpgsql_tolower			Translate a string to lower case
+ *					but honor "" escaping.
  * ----------
  */
 char *
 plpgsql_tolower(char *s)
 {
-	char	   *cp;
+	char   *ret;
+	char   *cp;
 
-	for (cp = s; *cp; cp++)
+	ret = palloc(strlen(s) + 1);
+	cp = ret;
+
+	while (*s)
 	{
-		if (isupper(*cp))
-			*cp = tolower(*cp);
+		if (*s == '"')
+		{
+			s++;
+			while (*s)
+			{
+				if (*s == '"')
+					break;
+				*cp++ = *s++;
+			}
+			if (*s != '"')
+			{
+				plpgsql_comperrinfo();
+				elog(ERROR, "unterminated \"");
+			}
+			s++;
+		}
+		else
+		{
+			if (isupper(*s))
+				*cp++ = tolower(*s++);
+			else
+				*cp++ = *s++;
+		}
 	}
+	*cp = '\0';
 
-	return s;
+	return ret;
 }
 
 

src/pl/plpgsql/src/scan.l

@@ -4,7 +4,7 @@
  *			  procedural language
  *
  * IDENTIFICATION
- *    $Header: /cvsroot/pgsql/src/pl/plpgsql/src/Attic/scan.l,v 1.1 1998/08/24 19:14:49 momjian Exp $
+ *    $Header: /cvsroot/pgsql/src/pl/plpgsql/src/Attic/scan.l,v 1.2 1999/01/28 11:48:31 wieck Exp $
  *
  *    This software is copyrighted by Jan Wieck - Hamburg.
  *
@@ -46,8 +46,8 @@ static void plpgsql_input(char *buf, int *result, int max);
 #define YY_INPUT(buf,res,max)	plpgsql_input(buf, &res, max)
 %}
 
-WS	[[:alpha:]_]
-WC	[[:alnum:]_]
+WS	[[:alpha:]_"]
+WC	[[:alnum:]_"]
 
 %x	IN_STRING IN_COMMENT